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Author : Dennis E. Rolston
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.3/5 (91 download)
Download or read book Field Measurement of Denitrification written by Dennis E. Rolston and published by . This book was released on 1977 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. W. Weaver
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (76 download)
Download or read book Field Measurement of Dinitrogen Fixation and Denitrification written by R. W. Weaver and published by . This book was released on 1986 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roland Daniel Hauck
Publisher :
ISBN 13 : 9780891187806
Total Pages : 0 pages
Book Rating : 4.1/5 (878 download)
Download or read book Field Measurement of Dinitrogen Fixation and Denitrification written by Roland Daniel Hauck and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurement of biological dinitrogen fixation in the field; Advantages of the nitrogen-15 dilution technique for field measurements of symbiotic dinitrogen fixation in legumes; Re-examination of the limitations of nitrogen-15 isotope dilution technique for the field measurement of dinitrogen fixation; Advantages and disadvantages of nitrogen-15 isotope dilution to quantify dinitrogen fixation in field-grown legumes - a critique; Field measurement of denitrification - an overview; Advantages of the acetylene method of measuring denitrification; Limitations of the acetylene blockage technique for field measurement of denitrification; Critique of the acetylene blockage technique for field measurement of denitrification.
Author : Niels Peter Revsbech
Publisher : Springer Science & Business Media
ISBN 13 : 1475799691
Total Pages : 352 pages
Book Rating : 4.4/5 (757 download)
Download or read book Denitrification in Soil and Sediment written by Niels Peter Revsbech and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation of atmospheric nitrogen gas by denitrifying bacteria may represent a significant nutrient sink in natural ecosystems. The rate of denitrification has often been difficult to measure in situ, however, and new methodologies should stimulate research on distribution of activity in space and time. The load of fertilizer nitrogen in modem agriculture has led to increasing nutrient reservoirs in recipient subsoils, aquifers, inland waters and coastal seas. By its conversion of nitrate to atmospheric nitrogen, bacterial denitrification is the only biological process to potentially reduce the impact of increasing nutrient loadings by fertilizer nitrogen in the environment. As part of a scientific program set up by the Danish Ministry of Environment to study environment cycling of nitrogen, phosphorous and organic matter (NPO program) in the light of agricultural, domestic and industrial activities, a symposium on DENITRIFICATION IN SOIL AND SEDIMENT was held at the University of Aarhus, Denmark from 6-9 June 19i\9. On the basis of lectures given at the symposium, this book contains a number of invited contributions on the regulation of denitrification activity (control of enzyme synthesis and activity) and measurement of in situ rates of denitrification in terrestrial and aquatic environments (control factors, diel and seasonal variations, etc). Emphasis has been placed on including the recent improvements in methodologies and current understanding of process regulation, however the book also contains examples of integrated research on the significance of denitrification in environmental nutrient cycling.
Author : University of California, Davis. Department of Land, Air, and Water Resources
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.F/5 ( download)
Download or read book Denitrification as affected by irrigation frequency of a field soil written by University of California, Davis. Department of Land, Air, and Water Resources and published by . This book was released on 1980 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. Clarholm
Publisher : Springer Science & Business Media
ISBN 13 : 9400910215
Total Pages : 295 pages
Book Rating : 4.4/5 (9 download)
Download or read book Ecology of Arable Land — Perspectives and Challenges written by M. Clarholm and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture in the industrial world has gone A common interest of the contributors is increas through dramatic changes over the past decades. ing the understanding of the turnover of carbon Mechanization in combination with high inputs of and inorganic nutrients in terestrial ecosystems. fertilizers and pesticides has turned deficits of agri The authors approach this topic from different cultural products into surplus. Over the same directions depending on their interests and ex period we have experienced increased environment pertise. Difficulties are identified in the quantifica al problems in both the atmosphere and our water tion of below-ground production where death and resources, which have been associated with the re-growth, if incorporated into the calculations, changes in management practices. can change production figures considerably as Concern about the potential pollution by compared to values derived from "peak" estimates. nitrogen fertilizers as well as the low utilization The role of root-derived carbon is investigated in efficiency of applied nitrogen by plants has created relation to nutrient competition between roots and a need for a better understanding of nitrogen microorganisms, the cost of N2 fixation and the cycling in the plant-soil-water system. To achieve decomposition of organic nitrogen. Mycorrhizae this, it is neccessary to study process interactions use root-derived carbon and their roles in phos and process regulation in an ecosystem context. phorus conservation and in supplying nutrients to During the last decade many ecosystem studies the host are exemplified.
Author : J.R. Freney
Publisher : Springer Science & Business Media
ISBN 13 : 9401716625
Total Pages : 325 pages
Book Rating : 4.4/5 (17 download)
Download or read book Gaseous Loss of Nitrogen from Plant-Soil Systems written by J.R. Freney and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: A growing interest has been shown recently in the dymanics of nitrogen in agricultural and natural ecosystems. This has been caused by increasing demands for food and fibre by a rapidly expanding world population, and by a growing concern that increased land clearing, cultivation and use of both fertilizer and biologically fixed nitrogen can have detrimental effects on the environment. These include effects on water quality, eutrophication of surface waters and changes in atmospheric composition all caused by increased cycling of nitrogenous compounds. The input and availability of nitrogen frequently affects the productivity of farming systems more than any other single management factor, but often the nitrogen is used inefficiently. Much of the fertilizer nitrogen applied to the soil is not utilised by the crop: it is lost either in solution form, by leaching of nitrate, or in gaseous forms as ammonia, nitrous oxide, nitric oxide or dinitrogen. The leached nitrate can contaminate rivers and ground waters, while the emitted ammonia can contaminate surface waters or combine with atmospheric sulfur dioxide to form aerosols which affect visibility, health and climate. There is also concern that increased evolution of nitrous oxide will deplete the protective ozone layer of the stratosphere. The possibility of a link between the intensity of agricultural use of nitrogen, nitrous oxide emissions and amounts of stratospheric ozone has focussed attention on these interactions.
Author : Peter J. Bottomley
Publisher : John Wiley & Sons
ISBN 13 : 089118810X
Total Pages : 1152 pages
Book Rating : 4.8/5 (911 download)
Download or read book Methods of Soil Analysis, Part 2 written by Peter J. Bottomley and published by John Wiley & Sons. This book was released on 2020-01-22 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the primary references on analytical methods in soil science, Part 2 of the Methods series will be useful to all biogeoscientists, especially those with an interest in microbiology or bioremediation.
Author : M.R. Carter
Publisher : CRC Press
ISBN 13 : 1420005278
Total Pages : 1264 pages
Book Rating : 4.4/5 (2 download)
Download or read book Soil Sampling and Methods of Analysis written by M.R. Carter and published by CRC Press. This book was released on 2007-08-03 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly updated and revised, this second edition of the bestselling Soil Sampling and Methods of Analysis presents several new chapters in the areas of biological and physical analysis and soil sampling. Reflecting the burgeoning interest in soil ecology, new contributions describe the growing number and assortment of new microbiological
Author : N. Ahmad
Publisher : Springer Science & Business Media
ISBN 13 : 9400917066
Total Pages : 430 pages
Book Rating : 4.4/5 (9 download)
Download or read book Nitrogen Economy in Tropical Soils written by N. Ahmad and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen Economy in Tropical Soils presents an authoritative and comprehensive state-of-the-art review on soil/plant nitrogen inter-relationships, with special reference to tropical soils and crops in aerobic and anaerobic environments. Use of isotopically labelled nitrogen in experimentation, especially in tropical environments, and recently developed analytical techniques for soil and plant materials are presented. An important aspect is the emphasis placed on the impact of the tropical environment on nitrogen transformations in the soil environment. This book should be an excellent source of information for senior undergraduate and graduate students with interest in soil/plant nitrogen inter-relationships, and for all levels of research workers in these fields.
Author : Donald R. Nielsen
Publisher : Elsevier
ISBN 13 : 1483273229
Total Pages : 541 pages
Book Rating : 4.4/5 (832 download)
Download or read book Nitrogen Behavior in Field Soil written by Donald R. Nielsen and published by Elsevier. This book was released on 2013-10-22 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen in the Environment, Volume 1: Nitrogen Behavior in Field Soil is the first of a two-volume treatise based on manuscripts presented at the international conference on ""Nitrogen in the Environment,"" held at the University of California Conference Center, Lake Arrowhead, in February, 1977. All original manuscripts were revised in accordance with discussions at the conference. The chapters published in these volumes are those revised manuscripts, with provisions in each chapter to preserve the major suggestions for their improvement. These two volumes—Nitrogen Behavior in Field Soil and Soil-Plant-Nitrogen Relationships—should be of value in bringing into perspective current knowledge on selected aspects of nitrogen in the environment. This book contains 26 chapters and begins with a paper on field trials with isotopically labeled nitrogen fertilizer. Separate chapters follow on topics such as computer simulation modeling for nitrogen in irrigated croplands; spatial variability of nitrogen in soils; application of gaseous-diffusion theory to measure denitrification; and measurement and prediction of anaerobiosis in soils.
Author : Guenther Stotzky
Publisher : CRC Press
ISBN 13 : 9780824794415
Total Pages : 576 pages
Book Rating : 4.7/5 (944 download)
Download or read book Soil Biochemistry written by Guenther Stotzky and published by CRC Press. This book was released on 1996-05-08 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides up-to-date reviews on the conditions that affect the quality of soil and on the methods to measure the effects of soil management and bioremediation--focusing on indigenous or introduced microorganisms with the capacity to remediate pollutants.
Author : G. P. Robertson
Publisher : Oxford University Press, USA
ISBN 13 : 0195120833
Total Pages : 481 pages
Book Rating : 4.1/5 (951 download)
Download or read book Standard Soil Methods for Long-term Ecological Research written by G. P. Robertson and published by Oxford University Press, USA. This book was released on 1999 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the volume is to facilitate cross-site synthesis and evaluation of ecosystem processes. The book is the first broadly based compendium of standardized soil measurement methods and will be an invaluable resource for ecologists, agronomists, and soil scientists."--BOOK JACKET.
Author : J. M. Lyons
Publisher : Springer Science & Business Media
ISBN 13 : 1468439537
Total Pages : 681 pages
Book Rating : 4.4/5 (684 download)
Download or read book Genetic Engineering of Symbiotic Nitrogen Fixation and Conservation of Fixed Nitrogen written by J. M. Lyons and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume developed from a symposium entitled "Enhancing Biological Production of Ammonia From Atmospheric Nitrogen and Soil Nitrate" that was held at Lake Tahoe, California in June, 1980. The meeting was supported by the National Science Foundation, Division of Engineering and Applied Sciences and by the College of Agricultural and Environmental Sciences, University of California, Davis. A total of 99 scientists from 41 insti tutions participated. Plants capture solar energy in photosynthesis and use mineral nutrients to produce human food and fiber products. The extent to which such materials are removed from agricultural production sites represents a permanent drain of mineral nutrients. Some plants of agronomic importance such as alfalfa, soybean, and clover associate with soil bacteria and use photosynthetic energy to reduce N2 to NH3. Many other free-living bacteria and some symbioses involving procaryotes and eucaryotes also reduce N2. Such processes repre sent one natural mechanism by which Man can augment soil N for agronomic purposes without using fossil fuel to synthesize and distribute N fertilizer. Other metabolic conversions in the N cycle and physical leaching processes remove N made available through N2 fixation. Thus nitrification, denitrification, and utilization of soil N by plants are processes that must be con sidered if one is to conserve N captured by N2 fixation. The meeting at Lake Tahoe united scientists from many disci plines to review the literature and to discuss current research directed toward the goal stated in the symposium title.
Author : N.S. Subba Rao
Publisher : Elsevier
ISBN 13 : 1483100332
Total Pages : 726 pages
Book Rating : 4.4/5 (831 download)
Download or read book Advances in Agricultural Microbiology written by N.S. Subba Rao and published by Elsevier. This book was released on 2016-06-06 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Agricultural Microbiology is a collection of papers about the progresses in the field of agricultural microbiology. The said papers are contributions of different experts in related fields. The book is divided into three sections. Section A covers topics related to the role of microorganisms in the mobilization of nutrients for plant growth such as the relationship of microbial genetics and biological nitrogen; plant surface microflora and plant nutrition; and developments in grass-bacteria associations. Section B discusses the use of microorganisms in the management of pathogens, pests, and weeds and includes topics such as the microbial control of insect pests; microbial herbicides; and agricultural antibiotics. Section C tackles strategies in bioconversion such as the production of biogas from agricultural wastes; bioconversion of lignocelluloses into protein-rich food and feed; and ethanol fuel from biomass. The text is recommended for biologists and agriculturists who would like to know more about the importance of microorganisms in the field of agriculture.
Author :
Publisher : Springer Science & Business Media
ISBN 13 : 1461228441
Total Pages : 317 pages
Book Rating : 4.4/5 (612 download)
Download or read book Advances in Soil Science written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Soil Science was conceived in 1982 to provide a forum for leading international scientists to analyze and summarize the available scientific information on a subject, assessing its importance and ident ifying additional research needs. This goal seems even more appropriate today. Much is known about our soil resources. The principles learned and the technology developed need to be used to increase food pro duction, particularly in developing countries, and sustain the productivity of the resource base. Advances in Soil Science fills a gap between the scientific journals and the comprehensive reference books. Scientists can delve in depth on a particular subject relating to soil science. Contributors are asked in particular to develop and identify principles that have practical applications to both developing and developed agricultures. Advances in Soil Science was established to be international in scope and cover all subjects relating to soil science. This volume certainly fulfills that objective. The first chapter is concerned with denitrification. The significance of denitrification in nitrogen use efficiency in agricultural, grassland, and forest ecosystems, and in global nitrogen cycling is now well recognized. Therefore, an understanding of denitrification is essential for the efficient use of nitrogen fertilizers and for protecting the environ ment. The second chapter looks at the effects of subzero temperatures on the physical, biological, and chemical processes. This is an important area of soil science that has not been studied in great detail.
Author :
Publisher :
ISBN 13 :
Total Pages : 652 pages
Book Rating : 4.3/5 (91 download)
Download or read book Research Reporting Series written by and published by . This book was released on 1980 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
